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Carbapenems

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https://www.readbyqxmd.com/read/27912842/the-rapid-spread-of-carbapenem-resistant-enterobacteriaceae
#1
REVIEW
Robert F Potter, Alaric W D'Souza, Gautam Dantas
Carbapenems, our one-time silver bullet for multidrug resistant bacterial infections, are now threatened by widespread dissemination of carbapenem-resistant Enterobacteriaceae (CRE). Successful expansion of Enterobacteriaceae clonal groups and frequent horizontal gene transfer of carbapenemase expressing plasmids are causing increasing carbapenem resistance. Recent advances in genetic and phenotypic detection facilitate global surveillance of CRE diversity and prevalence. In particular, whole genome sequencing enabled efficient tracking, annotation, and study of genetic elements colocalized with carbapenemase genes on chromosomes and on plasmids...
November 2016: Drug Resistance Updates: Reviews and Commentaries in Antimicrobial and Anticancer Chemotherapy
https://www.readbyqxmd.com/read/27910193/use-of-organs-from-donors-with-bloodstream-infection-pneumonia-and-influenza-results-of-a-survey-of-infectious-diseases-practitioners
#2
Sanjay R Mehta, Cathy Logan, Camille N Kotton, Deepali Kumar, Saima Aslam
BACKGROUND: Potential organ donors may be admitted with an infection to an intensive care unit, or contract a nosocomial infection during their stay, increasing the risk of potential transmission to the recipient. Because of a lack of practice guidelines and large-scale data on this topic, we undertook a survey to assess the willingness of transplant infectious diseases (ID) physicians to accept such organs. METHODS: We performed a 10-question survey of ID providers from the American Society of Transplantation Infectious Disease Community of Practice to determine the scope of practice regarding acceptance of organs from donors with bloodstream infection, pneumonia, and influenza prior to organ procurement, as well as management of such infections following transplantation...
December 2, 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/27909821/previous-bloodstream-infections-due-to-other-pathogens-as-predictors-of-carbapenem-resistant-klebsiella-pneumoniae-bacteraemia-in-colonized-patients-results-from-a-retrospective-multicentre-study
#3
D R Giacobbe, V Del Bono, P Bruzzi, S Corcione, M Giannella, A Marchese, L Magnasco, A E Maraolo, N Pagani, C Saffioti, S Ambretti, C S Cardellino, E Coppo, F G De Rosa, P Viale, C Viscoli
INTRODUCTION: the purpose of this retrospective multicenter study was to assess whether the risk of developing bloodstream infections (BSI) due to carbapenem-resistant Klebsiella pneumoniae (CRKP) in colonized patients is influenced by the occurrence of BSI due to other pathogens. METHODS: from January 2012 to March 2014, all patients with at least one rectal swab positive for CRKP and at least 30 days of previous hospital stay were included in the study. The primary outcome measure was CRKP BSI, defined as a time-to-event endpoint...
December 1, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27903240/central-line-associated-bloodstream-infections-in-a-tertiary-care-children-s-university-hospital-a-prospective-study
#4
Elisabetta Venturini, Carlotta Montagnani, Alessandra Benni, Sabrina Becciani, Klaus Peter Biermann, Salvatore De Masi, Elena Chiappini, Maurizio de Martino, Luisa Galli
BACKGROUND: The central-line associated bloodstream infections (CLABSI) are the most common healthcare-associated infections in childhood. Despite the international data available on healthcare-associated infections in selected groups of patients, there is a lack of large and good quality studies. The present survey is the first prospective study monitoring for 6 months the occurrence of central-line associated bloodstream infections in all departments of an Italian tertiary care children's university hospital...
December 1, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27903130/risk-factors-and-mortality-in-the-carbapenem-resistant-klebsiella-pneumoniae-infection-case-control-study
#5
Fethiye Akgul, Ilkay Bozkurt, Mustafa Sunbul, Saban Esen, Hakan Leblebicioglu
Carbapenem-resistant Klebsiella pneumoniae (CRKP) has been known as a nosocomial pathogen, both for the last 10 years in Turkey and for 20 years worldwide. Due to limited treatment options and high mortality rates, despite improvements in the field of medicine at the present time, CRKP is still a big threat for public health. This study was carried out between the dates of January 2010 and September 2014. Patients ≥18 who were hospitalized for at least 72 h and who also had CRKP growth were included in the study as a case group...
December 1, 2016: Pathogens and Global Health
https://www.readbyqxmd.com/read/27902383/detection-of-isaba1-in-association-with-a-novel-allelic-variant-of-the-%C3%AE-lactamase-adc-82-and-class-d-%C3%AE-lactamase-genes-mediating-carbapenem-resistance-among-the-clinical-isolates-of-mdr-a-baumannii
#6
Rajagopalan Saranathan, Rinki Kumari, Ramakrishnan Kalaivani, Sah Suresh, Anshu Rani, Shashikala Purty, Prashanth K
The objective of the present study is to investigate the diverse resistance determinants, their association with IS mobile elements and predilection of a particular clone for such associations in A. baumannii. Fifty-four consecutive isolates collected during 2011-2012 from a tertiary care hospital were subjected to susceptibility testing followed by PCR screening of commonly reported β-lactamases and 16S rRNA methyl transferase encoding genes. The integrity of RND efflux pump related genes in their respective operons was also investigated...
November 25, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27898208/-design-and-implementation-of-an-outpatient-parenteral-antimicrobial-therapy-program-in-primary-care-the-experience-at-a-second-level-hospital
#7
M Ruiz-Campuzano, E García-Vázquez, J J Hernández-Roca, J Gómez-Gómez, M Canteras-Jordana, E Mené-Fenor, A Hernández-Torres, A Peláez-Ballesta
OBJECTIVE: Outpatient parenteral antimicrobial therapy (OPAT) programs are a good assistance option in a wide variety of infectious diseases. Our aim was to design and implement an OPAT program in the area of influence of a second-level hospital, with no Home Hospitalization Service available, being necessary close collaboration between hospitalization and Primary Care teams, describe our cohort, analyse the antimicrobial treatment indicated and evaluate the prognostic and risk factors associated with readmission and mortality...
November 28, 2016: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/27895018/the-occurrence-of-diverse-abgri1-type-genomic-islands-in-acinetobacter-baumannii-global-clone-2-gc2-isolates-from-korea
#8
Dae Hun Kim, Sook-In Jung, Ki Tae Kwon, Kwan Soo Ko
In this study, we analyzed the frequency of the AbGRI1-type genomic island (GI) and its association with genotypes. We obtained 130 A. baumannii isolates causing bloodstream infections from patients in Korea. Antimicrobial susceptibility testing and multilocus sequence typing were performed. The presence of AbGRI1-type GIs and their structure were determined by sequential PCR and sequencing. Ninety-eight isolates (75.3%) representing 14 sequence types (STs) belonged to CC208, corresponding to global clone 2 (GC2)...
November 28, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27895014/ceftazidime-avibactam-as-salvage-therapy-for-infections-caused-by-carbapenem-resistant-organisms-a-case-series-from-the-compassionate-use-program
#9
Elizabeth Temkin, Julian Torre-Cisneros, Bojana Beovic, Natividad Benito, Maddalena Giannella, Raúl Gilarranz, Cameron Jeremiah, Belén Loeches, Isabel Machuca, María José Jiménez-Martín, José Antonio Martínez, Marta Mora-Rillo, Enrique Navas, Michael Osthoff, Juan Carlos Pozo, Juan Carlos Ramos Ramos, Marina Rodriguez, Miguel Sánchez García, Pierluigi Viale, Michel Wolff, Yehuda Carmeli
Ceftazidime-avibactam (CAZ-AVI) is a recently approved β-lactam β-lactamase inhibitor combination with the potential to treat serious infections caused by carbapenem-resistant organisms. Few patients with such infections were included in the CAZ-AVI clinical trials, and clinical experience is lacking. We present a case series of patients with infections caused by carbapenem-resistant Enterobacteriaceae (CRE) or Pseudomonas aeruginosa (CRPa) who were treated with CAZ-AVI salvage therapy on a compassionate-use basis...
November 28, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27892531/a-genome-wide-association-study-identifies-a-horizontally-transferred-bacterial-surface-adhesin-gene-associated-with-antimicrobial-resistant-strains
#10
Masato Suzuki, Keigo Shibayama, Koji Yahara
Carbapenems are a class of last-resort antibiotics; thus, the increase in bacterial carbapenem-resistance is a serious public health threat. Acinetobacter baumannii is one of the microorganisms that can acquire carbapenem-resistance; it causes severe nosocomial infection, and is notoriously difficult to control in hospitals. Recently, a machine-learning approach was first used to analyze the genome sequences of hundreds of susceptible and resistant A. baumannii strains, including those carrying commonly acquired resistant mechanisms, to build a classifier that can predict strain resistance...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27891222/epidemiology-of-klebsiella-pneumoniae-bloodstream-infections-in-a-teaching-hospital-factors-related-to-the-carbapenem-resistance-and-patient-mortality
#11
Lijun Tian, Ruoming Tan, Yang Chen, Jingyong Sun, Jialin Liu, Hongping Qu, Xiaoli Wang
BACKGROUND: Although Klebsiella pneumoniae bloodstream infections (KP-BSIs) have recently attracted attention due to an alarming raise in morbidity and mortality, there have been few reports on the epidemiology of KP-BSIs in mainland China. We sought to describe the epidemiological, microbiological, and clinical characteristics of KP-BSIs, focusing on the risk factors of carbapenem resistance and patient mortality. METHODS: A retrospective analysis of WHONET data of KP-BSI patients admitted to a teaching hospital in Shanghai, China, between January 1, 2011 and December 31, 2015 was performed, and the annual percentage of patients with carbapenem-resistant K...
2016: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/27890724/clinical-characteristics-and-antimicrobial-susceptibilities-of-anaerobic-bacteremia-in-an-acute-care-hospital
#12
Thean Yen Tan, Lily Siew Yong Ng, Lee Ling Kwang, Suma Rao, Li Ching Eng
: This study investigated the clinical features of anaerobic bacteraemia in an acute-care hospital, and evaluated the antimicrobial susceptibility of these isolates to commonly available antibiotics. MATERIALS & METHODS: Microbiological and epidemiological data from 2009-2011were extracted from the laboratory information system and electronic medical records. One hundred and eleven unique patient episodes consisting of 116 anaerobic isolates were selected for clinical review and antibiotic susceptibility testing...
November 24, 2016: Anaerobe
https://www.readbyqxmd.com/read/27890667/investigation-of-carbapenem-resistance-and-the-first-identification-of-klebsiella-pneumoniae-carbapenemase-kpc-enzyme-among-escherichia-coli-isolates-in-turkey-a-prospective-study
#13
Mert Ahmet Kuskucu, Asiye Karakullukcu, Mailihaba Ailiken, Barıs Otlu, Bilgul Mete, Gokhan Aygun
BACKGROUND: The aim of this study was to determine the presence of carbapenem resistance and carbapenemase production in Escherichia coli isolates from clinical samples in Turkey. METHODS: The prospective study included a total of 4052 Escherichia coli isolates collected from patients admitted to a hospital from March 2011 to May 2012. We used ertapenem disc for screening carbapenemase production, and the confirmation was performed by using Etest. The resistance mechanisms and genetic relatedness of the carbapenem resistant strains were investigated by using PCR (polymerase chain reaction) and pulsed-field gel electrophoresis (PFGE), respectively...
November 23, 2016: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/27890443/oxa-23-and-isaba1-oxa-66-class-d-%C3%AE-lactamases-in-acinetobacter-baumannii-isolates-from-companion-animals
#14
Christa Ewers, Peter Klotz, Ursula Leidner, Ivonne Stamm, Ellen Prenger-Berninghoff, Stephan Göttig, Torsten Semmler, Sandra Scheufen
Acinetobacter baumannii is recognised as a major pathogen of nosocomial infections that frequently show resistance to last-resort antimicrobials. To investigate whether A. baumannii from companion animals harbour carbapenem resistance mechanisms, 223 clinical isolates obtained from veterinary clinics between 2000 and 2013 in Germany were screened for carbapenem-non-susceptibility employing meropenem-containing Mueller-Hinton agar plates. Minimum inhibitory concentration (MIC) data were obtained using the VITEK(®)2 system...
November 16, 2016: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/27886280/starvation-and-antibiotics-induced-formation-of-persister-cells-in-pseudomonas-aeruginosa
#15
Patrik Mlynarcik, Milan Kolar
BACKGROUND: Planktonic stationary and exponential cultures of Pseudomonas aeruginosa are highly resistant to killing by bactericidal antimicrobials because of the presence of persisters, cells that are multidrug tolerant and play a key role in the recalcitrance of biofilm infections. AIM: The aim of this study was to investigate the formation of persister cells in P. aeruginosa stationary vs. exponential cultures using different class antimicrobials. METHODS: The susceptibilities of P...
November 23, 2016: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/27881972/multilocus-sequence-typing-analysis-of-carbapenem-resistant-acinetobacter-baumannii-in-a-chinese-burns-institute
#16
Guangtao Huang, Supeng Yin, Yali Gong, Xia Zhao, Lingyun Zou, Bei Jiang, Zhiwei Dong, Yu Chen, Jing Chen, Shouguang Jin, Zhiqiang Yuan, Yizhi Peng
Acinetobacter baumannii is a leading pathogen responsible for nosocomial infections. The emergence of carbapenem-resistant A. baumannii (CRAB) has left few effective antibiotics for clinicians to use. To investigate the temporal evolutionary relationships among CRAB strains, we collected 248 CRAB isolates from a Chinese burns institute over 3 years. The prevalence of the OXA-23 gene was detected by polymerase chain reaction. Multilocus sequence typing was used to type the CRAB strains and eBURST was used to analyze their evolutionary relationships...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27881539/coexistence-of-fosfomycin-and-colistin-resistance-in-klebsiella-pneumoniae-whole-genome-shotgun-sequencing
#17
Balaji Veeraraghavan, Susmitha K Perumalla, Naveen Kumar Devanga Ragupathi, Agila Kumari Pragasam, Dhiviya Prabaa Muthuirulandi Sethuvel, Sandhana Inian, Francis Yesurajan Inbanathan
Resistance to colistin is a major threat that limits therapeutic choices for treating carbapenem-resistant Klebsiella pneumoniae infections. Herein, we report the draft genome sequences of two colistin-resistant K. pneumoniae isolates (BA41763 and B6753). The sequence data indicate that BA41763 and B6753 contain genomes of ~5.9 and 5.7 Mb in size with several plasmids.
November 23, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27880708/ereply-diagnostic-intricacies-and-fortuitous-treatment-approaches-for-carbapenem-resistant-klebsiella-pneumoniae
#18
Daniele Roberto Giacobbe, Antonio Salsano, Anna Marchese, Francesco Santini
No abstract text is available yet for this article.
November 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/27880707/ecomment-diagnostic-intricacies-and-fortuitous-treatment-approaches-for-carbapenem-resistant-klebsiella-pneumoniae
#19
Tomislav Mestrovic, Branka Bedenic
No abstract text is available yet for this article.
November 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/27876276/piperacillin-tazobactam-as-an-alternative-antibiotic-therapy-to-carbapenems-in-the-treatment-of-urinary-tract-infections-due-to-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-an-in-silico-pharmacokinetic-study
#20
Hélène Guet-Revillet, Elise Tomini, Aurélie Emirian, Olivier Join-Lambert, Hervé Lécuyer, Jean-Ralph Zahar, Vincent Jullien
Piperacillin/tazobactam (TZP) as an alternative treatment to carbapenems for infections involving extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae (ESBL-PE) remains debated. In this study, the probabilities of pharmacodynamic (PD) target attainment with different TZP regimens in ESBL-producing Escherichia coli (ESBL-Ec) and Klebsiella pneumoniae (ESBL-Kp) were evaluated in the context of pyelonephritis. Minimum inhibitory concentrations (MICs) of 144 ESBL-Ec and 111 ESBL-Kp from pyelonephritis were measured, and two previously published population pharmacokinetic models were used to determine by Monte Carlo simulation the probabilities of reaching two PD targets (50%fT>MIC and 100%fT>MIC) with TZP doses of 4 g three times daily and 4...
November 15, 2016: International Journal of Antimicrobial Agents
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